| abstract |
PURPOSE:To disperse electrolyte in an electrode catalyst layer or on an interface of an electrode and electrolyte, and allowing effective ionic conductivity by water penetration to increase cell performance by adding ion exchange group or placing a substance having ion exchange group between electrolyte and an electrode or in an electrode catalyst layer. CONSTITUTION:Ion exchange group is added or substance having ion exchange group is placed between an electrolyte 31 and electrodes 21 and 22 or in an electrode catalyst layer. For example, a polyelectrolyte 111, such as liquid state polystyrene sulfonic acid or poyethylene sulfonic acid is impregnated in a catalyst layer of a fuel electrode 21, or fixed by kneading in catalyst layer when the electrode is manufactured. A polyelectrolyte 112 is arranged between an ion exchange film 31 and the electrode when a unit cell is assembled, if necessary. |